KROHNE VARIFLUX IFS 6000 F-EEx EN - Manual (Page 8)

8 ALTOFLUX IFS 4000F-EEx, PROFIFLUX IFS 5000F-EEx, VARIFLUX IFS 6000F-EEx
1.3 General information VARIFLUX IFS 6000 F-EEx
The VARIFLUX IFS 6000 F-EEx electromagnetic primary head in remote design (F = field) complies
with the European Directive 94/9 EC (ATEX 100a) and has been approved for hazardous classified
locations of Zone 1 and 2 by the KEMA conform to the European Standards of the EN 500xx series.
They have the following approval number:
KEMA 02 ATEX 2038 X
The IFS 6000 F-EEx primary head is designed for ambient temperatures in the range of -40°C up to
+60°C inclusive. The IFS 6000 F-EEx primary head in remote design is connected to a associated
signal converter, e.g. IFC 090 F/…-EEx, which is also approved in accordance with the European
Directive 94/9 EC (ATEX 100a). The signal converter is installed on a distance from the IFS 6000 F-
EEx primary head and connected via a field coil cable, an electrode cable and a bonding wire.
The IFS 6000 F-EEx primary head in remote design can be installed in environments that are
classified as Zone 1 or Zone 2 hazardous locations. The maximum permissible process liquid
temperature is dependent on the maximum ambient temperature (Ta) that can occur in that
environment too.
For installation of the IFS 6000 F-EEx primary head please conform to the below listed temperature
classification table. The first column lists the temperature classes for gases and the second one the
rating for dusts.
Temperature classification
Maximum process liquid temperature Temperature
class Max. surface
temperature
Ta ≤ 40 °C Ta ≤ 50 °C Ta ≤ 60 °C
T6 T 80 °C 70 °C 70 °C 70 °C
T5 T 95 °C 85 °C 85 °C 85 °C
T4 T130 °C 120°C 120°C 120°C
T3 T190 °C 180°C 180°C 165°C
Use heat-resistant cables above - 160 °C 115°C
The IFS 6000 F-EEx is marked with one of the following EEx-codes, which depends on the meter
size range (see table below).
Marking IFS 6000 F-EEx code
Meter size
EEx-code
DN2.5…DN15 II 2GD EEx me ib IIC T6…T3
DN25…DN80 II 2GD EEx de ib IIC T6…T3
Also see the EC-type examination certificate in section 5 of these additional instructions.